… Building endurance has been key for the 2009 eighth-round pick, who began the season in the Intimidators’ bullpen. The White Sox sent him to extended spring training to become a starter, a role he filled at Monmouth University.

“Basically, they liked my pitches, so they sent me back to extended to get up to five innings,” he said.

The transition continued last month at Rookie-level Bristol, where he went 2-1 with a 2.45 ERA in four starts. Since returning to Kannapolis earlier this month, Buch is 2-0 with a 0.53 ERA in three starts.

“This was my longest outing,” he said. “I was around 12-13 pitches [an inning], maybe 15 sometimes. I got stronger as the game got going, but they’re taking it easy with me because I haven’t started in a couple of years.”